import pandas as pd

# 读取数据
data = pd.read_csv('./data/lj_data.csv', sep=',')

# 查看前n行
print(data.head())  # 默认前5行
print(data.head(3))

# 查看行列
print(data.shape)

# 查看字段名
print(data.columns)

# 查看索引
print(data.index)
